Selective Laser Melting of Ti6Al4V-2%Hydroxyapatite Composites: Manufacturing Behavior and Microstructure Evolution

In this work, selective laser melting of Ti6Al4V (Ti64) and 2 wt.% hydroxyapatite (HA) composites was performed with the purpose osseointegration enhancement biological fixation between implants bone tissue. The microstructural evolution mechanical properties were analyzed by using X-ray diffraction (XRD), optical microscopy (OM), a scanning electron microscope (SEM) equipped (EDX) (EBSD) systems, microhardness, nanoindentation, tensile testing. results showed that Ti64-2%HA composite components exhibited complicated manufacturing behavior, which could be correlated decomposition HA. microstructure found to mainly consist α Ti small amount HA distributed along grain boundaries. Furthermore, interaction Ti64 leading formation Ti3P, TixO, P, CaTiO3 phases, resulted in poor properties, as compared pure components. Conversely, SLM significantly higher than human reported previously literature.